261144034 has 8 divisors (see below), whose sum is σ = 391994460. Its totient is φ = 130479216.

The previous prime is 261144011. The next prime is 261144071. The reversal of 261144034 is 430441162.

It can be written as a sum of positive squares in 2 ways, for example, as 259113409 + 2030625 = 16097^2 + 1425^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42829 + ... + 48544.

Almost surely, 2^261144034 is an apocalyptic number.

261144034 is a deficient number, since it is larger than the sum of its proper divisors (130850426).

261144034 is a wasteful number, since it uses less digits than its factorization.

261144034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92804.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 261144034 is about 16159.9515469571. The cubic root of 261144034 is about 639.1851886550.

Adding to 261144034 its reverse (430441162), we get a palindrome (691585196).

The spelling of 261144034 in words is "two hundred sixty-one million, one hundred forty-four thousand, thirty-four".